118661671 has 2 divisors, whose sum is σ = 118661672. Its totient is φ = 118661670.

The previous prime is 118661657. The next prime is 118661677. The reversal of 118661671 is 176166811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 118661671 - 2¹¹ = 118659623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118661671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118661677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59330835 + 59330836.

It is an arithmetic number, because the mean of its divisors is an integer number (59330836).

Almost surely, 2^118661671 is an apocalyptic number.

118661671 is a deficient number, since it is larger than the sum of its proper divisors (1).

118661671 is an equidigital number, since it uses as much as digits as its factorization.

118661671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 37.

The square root of 118661671 is about 10893.1937924559. The cubic root of 118661671 is about 491.4018870920.

The spelling of 118661671 in words is "one hundred eighteen million, six hundred sixty-one thousand, six hundred seventy-one".